The 1965–66 Algerian Cup was the 4th edition of the Algerian Cup. MC Saïda were the defending champions, having beaten ES Mostaganem 2–1 in the previous season's final.
| كأس الجزائر | |
|---|---|
| Tournament details | |
| Country |  Algeria |
| Defending champions | MC Saïda (1) |
| Final positions | |
| Champions | CR Belcourt (1) |
| Runner-up | RC Kouba |
Round of 64 edit
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Round of 32 edit
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Round of 16 edit
| 05 02 1966 | CR Belcourt | 3 – 2 | AS Ain M'lila |
| 6 February 1966 | MC Saïda | 0–1 (a.e.t.) | USM Alger | Oran |
Sahraoui  27' |
Stadium: Stade 19 juin 1965 Attendance: 25,000 Referee: Benchériet |
| 1966 | MC Oran | 3 – 2 (a.e.t.) | ES Souk Ahras |
| 1966 | ES Sétif | (w/o) | WA Tlemcen |
| 1966 | USM Oran | 0 – 2 | WA Boufarik | Stade Saint Eugéne, Algiers |
| 1966 | USM Bel-Abbès | 1 – 0 | AS Khroub |
| 1966 | OM Ruisseau | 4 – 1 | USM Sétif |
Quarter-finals edit
| 20 February 1966 | CR Belcourt | 0 – 0 (6 - 3) | USM Bel-Abbès | Stade 19 juin 1965, Oran |
| 20 February 1966 | RC Kouba | 1 – 0 | MC Saida | Stade d'El Anasser, Algiers |
| 20 February 1966 | MC Oran | 2 – 1 | OM Ruisseau | Stade 19 juin 1965, Oran |
| 20 February 1966 | ES Sétif | 2 – 0 | WA Boufarik |
Semi-finals edit
| 1966 | CR Belcourt | 3 – 1 (a.e.t.) | ES Sétif |
Final edit
Match edit
| CR Belcourt | 3 – 1 | RC Kouba |
|---|---|---|
| Lalmas 13', 63' Mattem 89' |
82' Naneche |